What this notice is about We sent you this notice to confirm that you registered for an IRS online service. What you need to do If you didn't initiate this registration when accessing one of our online services, immediately call the number on your notice to disable your account. If you requested an activation code by mail, to complete your registration you must: Visit online services to activate your account. Sign in with the username and password you created. Enter your activation code from the notice you received. If you already completed your registration, no action is necessary. Frequently asked questions What happens if someone else used my personal information to register online at IRS? If you didn't initiate this registration, immediately call the number on your notice. Once we verify your identity, we'll disable your online account. Reference tools Publication 1, Your Rights as a Taxpayer Full list of tax forms and instructions 需要協助嗎? 您可以授權某人(英文)代表您向國稅局聯絡。 請查看您是否符合從低收入納稅人協助中心(英文)獲得協助的資格。 如果您無法在線上找到您需要的資訊,請撥打您的通知或信件上方的國稅局號碼。如果您未收到信件或通知,請使用電話協助。 如果您無法自行解決罰款,請聯絡 IRS 內部的獨立組織——納稅人權益維護服務處。